Tubing expanding tool



Nov. 26, 1946. H. c. KEMMERLIJN TUBING EXPANDING TOOL I Filed Ma 51,1944 l|| 1| INVENTOR.

AT 'D R N EYB Patented Nov. 26, 1946 UNITED STATES PATENT i oFFicE"TUBING EXPANDING TOOL Henry C. Kemmerlin, Tryon, N. 0.

Application May 31, 1944, Serial No. 538,126

1 Claim.

The invention relates to a tool and more especially to an expandingtoolfor stretching or expanding purposes.

The primary object of the invention is the provision of a tool of thischaracter, wherein the jaw ends of the same have fitted therein workapplicators of special construction, so that the work can be properlyengaged for the expanding or stretching of the latter, the tool being offorceps or plier type for hand operation thereof.

Another object of the invention is the provision of a tool of thischaracter, wherein the same is designed for use in expanding tubing or acarrier therefor with the jaws of the said tool constructed so as toenter tubing or apertures in elastic material and be forced apart bypressure on the handles, thereby enlarging the size of the aperture andallowing a convenient connection with another tube or carrier.

A further object of the invention is the provision of a tool of thischaracter, which is simple in construction, thoroughly reliable andefiicient in operation, strong, durable, readily and easily handled, thework applicators being removably fitted, and comparatively inexpensiveto manufacture.

With these and other objects in view the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described, illustrated in the accompanyingdrawing, which shows the preferred embodiment of the invention, andpointed out in the claim hereunto appended.

In the accompanying drawing:

Figure 1 is a side view of the tool constructed in accordance with theinvention.

Figure 2 is a fragmentary end view of the same.

Figure 3 is a fragmentary inner face view of one of the jaws of thetool.

Figure 4 is a view similar to Figure 3 of the other jaw of the tool.

Figure 5 is a sectional view taken on the line 5--5 of Figure 3 lookingin the direction of the arrows.

Figure 6 is a side view of the jaw for interfitting with the other jawshown in Figure 5 of the tool. 1

Figure '7 is a sectional view taken on the line 1-1 of Figure 1' lookingin the direction of the arrows. 7

Similar reference characters indicate corresponding parts throughout theseveral views in the drawing,

Referring to the drawing in detail, A designates generally the tool inits entirety as constructed 2 in accordance with the invention, andhereinafter set forth'in detail.

The tool A comprises a pair of levers l0 and l I, respectively, eachhaving a handle end l2 which is of straight formation, and of requiredlength. The levers l0 and II converge toward each other from theinnermost portions of the handle ends l2, then are reversely angledthereto at the ends opposite and remote from the said handle ends I2, toprovide outwardly divergent jaws l 3.

The lever l0 next to its jaw I 3'and partially extended into the latterhas a bifurcation l4 longitudinally directed therein, while the lever Hnext to its jaw l3 and partially extended into the latter has in theouter faces recesses l5 providing a centered narrow elbow portion I6,which interfits the bifurcation M, the latter being also'reverselyelbowed at 11 to the elbow portion [6. The elbowed portions l6 and I!are pivoted together by a pivot bolt l8 for swingingly connecting thelevers with each other for the swinging of the jaws l3 toward and awayfrom one another. This pivot bolt I8 is located at the crotch of theelbows l6 and I! of the levers Ill and II, respectively.

Formed in the tips of the jaws l3 are sockets [9 for reception of thestuds 20 of the work appli- V caters 2|, these having outer half-roundedouter side faces 22 conforming to the inner diameter and shape of atubing or apertures therefor, the studs 20 being removably secured inthe sockets l9 by set screws 23 tapped in the sides of the jaws I3 atone side thereof.

The lever II has fitted thereto an adjustable stop screw 24 which isadapted to contact with the base of a socketed stop 25 formed in theother lever I0, so as to limit the throw of the said levers when pressedtoward each other at the handle ends [2 thereof, so as to regulate theseparation of the jaws l3 when manually operating the tool for expandingor stretching purposes in operating on a tubing or carrier therefor asbefore stated.

The spreading of the jaws I3 is had by separating the handle ends l3 inthe manual operation of the tool as will be apparent, due to theconnection of the levers l0 and II as has been set forth.

From the foregoing it is thought that the construction of the tool andits manner of operation will be clearly understood, and therefore a moreextended explanation has been omitted.

What is claimed is:

A tool of the kind'described comprising a pair .of levers having handleends of straight formation which converge toward each other from the 4jaw 'ends of said levers, work applicators having studs, movably fittingthe sockets in said levers, said work applicators having half roundedouter side faces formed thereon at a position off-center with relationto the studs, means for retaining said studs in said sockets and a limitscrew fitting one of the levers and engaging the other lever forregulating the separation of the work applicators on actuating thelevers.

HENRY C. KEMNIERLIN.

